The gift trap: why your parents' money is now your partner's property

First published 12 January 2026. Last updated: 8 September 2026 | Written by Andy Bell, Partner, Lane Neave

If your parents give you money for a house deposit and the money goes into the home you share with your partner, the law in New Zealand will usually treat that money as relationship property. If you separate, your partner is entitled to half of it, however clearly everyone understood it was meant for you. That is the gift trap. It is avoidable, but only if the money is documented properly before it is used, either as a loan recorded in a deed of acknowledgement of debt, or as your separate property in a section 21 contracting out agreement that your partner signs.

The “Bank of Mum and Dad” is arguably the biggest lender in the New Zealand housing market right now. For many young professionals in Wellington, it is the only way to bridge the gap between a savings account and a 20 percent deposit. The scenario is usually the same. You find the perfect house. You are $100,000 short. Your parents, wanting to see you settled, offer to transfer the difference. There is a hug, a transfer of funds, and a vague verbal promise that “you can pay us back when you sell.” It feels like a family milestone. Legally, you may have just walked into a trap that could cost your family that $100,000.

Is a gift from parents for a house deposit relationship property in NZ?

Usually, yes, once it is in the family home. The Property (Relationships) Act 1976 starts from a helpful place for the child receiving the money. Under section 10, property that one partner receives as a gift from a third person, including a parent, is separate property. It stays separate unless it is intermingled with relationship property to the point where it is unreasonable to treat it as separate any more.

The problem is what happens next. Section 10(4) says that regardless of that rule, the family home and the family chattels are relationship property, unless a Part 6 agreement says otherwise. Section 8 says the family home is relationship property whenever it was acquired and whoever paid for it. So the moment your parents’ money is used to buy the house you and your partner live in, the protection in section 10 falls away. The gift has become part of the family home, and the family home is shared equally once the couple have lived together as a couple for three years, or are married or in a civil union. Equal sharing is a strong presumption rather than an absolute rule: the court can depart from it only where extraordinary circumstances make equal sharing repugnant to justice (section 13), which is a high bar.

For de facto couples who have lived together for less than three years the position is different. Section 14A means the Act generally does not apply to a short de facto relationship at all, and where it does the division is by contribution rather than equally. Many first-home purchases happen inside that first three years, which is exactly when the paperwork is cheapest to do and most often skipped.

If you separate five years later, your former partner is entitled to half of the home’s equity, including the half that was funded by your parents. The Act does not ask where the deposit came from. It asks whether the property is the family home.

Was it a gift or a loan, and why does it matter?

This is the question every one of these disputes turns on, and the answer changes everything. A genuine loan from your parents that was used to buy the family home is a relationship debt, because it was incurred to acquire relationship property (section 20). On separation, relationship debts are deducted before the net value of the pool is divided (section 20D), so your parents get their money back and only what is left is split. A gift, by contrast, simply becomes part of the pool.

The law leans toward gift. Where a parent transfers money to a child, the courts apply what is called the presumption of advancement: without clear evidence to the contrary, a parent is presumed to intend to advance their child in life, not to lend to them. That presumption can be rebutted, but only with evidence, and the evidence has to exist before the relationship breaks down. The Court of Appeal confirmed in June 2026 that the presumption still applies to adult children in New Zealand, in Liao v Liao [2026] NZCA 250, and that the court looks at all the evidence of what was intended at the time the money changed hands.

I hear the same sentence in my office constantly: “My ex knows it was a loan. We talked about it.” Unfortunately, in the heat of a separation, memories change. If your former partner says “I thought it was a gift to us both” and you have nothing in writing, the Family Court will struggle to find in your favour. A casual email, a text saying “thanks Dad, we’ll sort you out later” or a verbal agreement over Sunday roast is rarely enough to overturn the presumption of a gift.

How do you protect a house deposit gift from parents?

The only reliable way to protect your parents’ money is to treat the transaction with the same rigour a bank would. There are two documents that do the job, and which one you need depends on what your parents actually intend.

If the money is a loan: a deed of acknowledgement of debt

A deed of acknowledgement of debt is a relatively simple legal document that does three things.

1. Records the advance as a loan. It states in plain terms that the money must be repaid, and on what terms, even if repayment is not expected until the house is sold.
2. Secures the debt. The deed itself is not registered, but the loan it records can be secured on the title, usually by a second mortgage behind the bank or by a caveat protecting an agreement to mortgage. Either way the house cannot be sold or refinanced without your parents being dealt with first.
3. Requires both signatures. Your partner must sign it. This is the step people most want to skip and it is the one that matters most, because it prevents a later claim that they “didn’t know” it was a loan.

If the money is a gift: a section 21 contracting out agreement

If the money really is a gift, but your parents want you rather than your partner to have the benefit of it, you need a contracting out agreement under section 21 of the Property (Relationships) Act 1976, commonly called a prenup. The agreement ring-fences the deposit as your separate property, so that if you separate you receive your parents’ contribution back before the remaining equity is divided. To be binding, both of you need independent legal advice and a lawyer must witness each signature and certify that the effect of the agreement was explained. Even a properly executed agreement can be set aside if giving effect to it would cause serious injustice (section 21J), so the terms need to be fair as well as formally correct. Our contracting out agreement page explains how that process works and what it costs.

It might feel unromantic to ask your partner to sign a legal document just as you are buying your first home together. The alternative is far worse. If you do not document the contribution, you are not just borrowing money. You are potentially gifting your parents’ retirement savings to your future ex.

“The clients who come to see me after a separation almost never have a problem with the law. They have a problem with the paperwork. Everyone in the family knew the deposit was Mum and Dad’s money. Nobody wrote it down. By the time it matters, the one person who could contradict them has every reason to.” Andy Bell, Partner, Lane Neave (Legal 500 Asia Pacific Recommended Lawyer)

What if the money has already gone into the house?

It is not too late, provided the relationship is still intact. A deed of acknowledgement of debt can be signed after the money has been advanced, and a section 21 agreement can be made at any point during a relationship, not only before it. The document will record what was intended at the time and what the parties now agree. What you cannot do is fix it after separation, because at that point your former partner has no reason to sign anything that reduces their share.

If you are already separated and the deposit was never documented, the position is harder but not hopeless. Bank records showing the transfer, contemporaneous messages about repayment, and evidence of any repayments actually made can all help rebut the presumption of a gift. Whether that evidence is enough is a judgement call that depends on the facts, and it is worth taking advice before you concede the point. Our guide to the five legal points that matter on separation covers the wider picture.

What should parents do before gifting a house deposit?

Parents are the ones with the money at risk, so it is reasonable for parents to set the terms.

• Decide, honestly, whether it is a gift or a loan. The document has to reflect the real intention. A “loan” that nobody ever expects to be repaid will be treated as a gift, because the court looks at what was actually intended, not at the label.
• Get the document signed before the money moves. Once the funds are in the house, the leverage to insist on paperwork is gone.
• Insist that your child’s partner signs. A deed signed only by your child binds your child. It does not bind the person you are worried about.
• Register the security. A registered security ranks behind the bank’s mortgage but ahead of unsecured creditors, and it means the house cannot be sold or refinanced without the loan being addressed, which protects your parents in situations well beyond a separation.
• Keep the money identifiable. Paying the deposit directly to the solicitor’s trust account for settlement, rather than into a joint account, keeps a clear record of where the money came from and what it was used for. That record does not stop the family home rule applying, but it is the evidence a loan claim depends on. The same intermingling rules apply to inheritances.

Key takeaways

• A parental gift used for the family home becomes relationship property. The family home is shared equally whoever paid for it.
• A loan is a debt that comes out first. A gift goes into the pool. The law presumes gift, so the loan has to be proven.
• Two documents fix it: a deed of acknowledgement of debt for a loan, or a section 21 agreement for a gift meant for one partner only. Both need the partner’s signature.
• Do it before the money moves. It can be done later while the relationship is intact, but never after separation.

Frequently asked questions

Does a gift from parents for a house deposit have to be repaid in NZ?

Not if it is a gift. A gift becomes the recipient’s property and, once used for the family home, part of the relationship property pool. If the parents intend it to be repaid, it needs to be recorded as a loan in a deed of acknowledgement of debt signed by both partners, otherwise the law will presume it was a gift.

Can my ex claim half of the deposit my parents gave me?

If the deposit went into the family home and there is no deed of acknowledgement of debt or section 21 agreement, generally yes. The family home is relationship property under section 8 of the Property (Relationships) Act 1976 whoever paid for it, and section 10(4) removes the separate property protection that a gift would otherwise have.

Is a loan from parents relationship property?

A genuine loan is a debt, not property. On separation it is repaid before the remaining equity is divided, so the parents get their money back. The difficulty is proving it was a loan, because the law presumes a parent intends a gift. A signed deed, ideally registered against the title, is the evidence that settles it.

Do we need a lawyer for a deed of acknowledgement of debt?

A deed can be prepared by a lawyer in a short time and at modest cost compared with the sum it protects. If you want the debt secured against the title, the mortgage or caveat has to be registered through a lawyer or licensed conveyancer. A section 21 agreement is different: it is only binding if each partner receives independent legal advice and a lawyer witnesses and certifies each signature.

What if my parents gifted the deposit before we were a couple?

If the money was gifted to you and you bought the house before the relationship began, the house may start as your separate property, but if it becomes the family home it is relationship property under section 8. If your partner later moves in and you live together as a couple for three years, equal sharing applies. A section 21 agreement made when the relationship becomes serious is the way to preserve your position.

Related: contracting out agreements, is inherited money relationship property?, and our relationship property services.

Andy Bell is a Partner at Lane Neave, a relationship property and employment lawyer in Wellington with over 20 years of experience. He is a Recommended Lawyer in the Legal 500 Asia Pacific and a Recommended Employment Lawyer in Doyle’s Guide 2026.

Last updated: 8 September 2026. This article is general information, not legal advice.